charley1968
Member
- Joined
- Sep 20, 2013
- Messages
- 491
Well, how fun is it to adjust a laser on a burning Kapex, i arsk ye..
charley1968 said:Well, how fun is it to adjust a laser on a burning Kapex, i arsk ye..
The issue of crappy power supply on sites isn't that new. Years ago I had an Elu TGS flip-over saw (the early metallic blue one) and they were notorious for burning out starter/run capacitors - mainly because people used to run them on 3kVA transformers whereas the dealers and repairers recommended 5kVA with no other continuous load (e.g. lighting, etc) plugged into the transformer. I recently had to run a TS55 at the end of three extension cables and that was dropping in and out of protection mode because of the voltage drop. The solution is, obviously, to run with oversize (4mm or 6mm cross section) cables and/or to limit the length of cable run, but that isn't always "doable". Maybe garages in the USA have the same voltage drop problems we UK site workers have to contend withPeter Parfitt said:Do you think that motors running at 110 v on site or with a less than perfect 110 v supply (say a 15 amp supply in a North American garage) run the risk of overheating due to supply voltage dropping on load?
PeterK said:All this talk about circuit breakers ---
Here in the USA circuit breakers are labeled for maximum amperage draw but that is not the same thing as continuos draw. Breakers are designed to hold at 80% of the printed rating for continuous usage and that is what the National Electrical Code states. They trip on overcurrent, have some delay in tripping depending upon the amount of over-current and normally are heat affected. A 15 amp breaker may hold 20 amps for a short period of time - like a tool start up but is rated only for 12 amps continuous. Not guaranteed for that though.
Breakers are to protect wiring for fire prevention - NOT to protect what is plugged in. Circuits are designed with the breaker matching the wire gauge being installed. use 12 gauge for 20 amp, 14 gauge for 15 amp. Breakers do NOT throttle voltage. If you are experiencing low voltage during use then you have a problem with wire size, wire length, excess current draw for wire gauge on possibly oversized breaker.
As to the miter saw on a CT, yea it is starting to really max out the design of the electrical components on the vac. Personally I don't plug my 12" miter saw into the vac nor my OF2200 but all other tools do use the vac as the power source. I have had my vac apart and the wiring does not impress so my high current tools are direct plugged into a wall outlet or oversized extension cable. I also use 10 gauge extension cables for outdoor use to reduce chance of voltage drop as that can easily do serious motor damage.
Vladiator said:Even though i like the Bosch sliding mechanism, i bought myself a Kapex with UG stand and extensions 5 years ago. Not everyone can shell out so much on a miter saw set up, but i see it as a life-time investment.
There's nothing on the market that beats this set up in terms of precision, portability and dust extraction. Kapex with UG stand sets up in less than a minute. Loading and unloading it into your truck is a simple without breaking a sweat. I used my Kapex daily for rough and finish framing... i even use it to cut aluminum extrusions. Some rough carpenters occasionally freak out when i bring it on site... they say i shouldn't use a quality saw like that for rough framing, that i might kill the motor, etc. So far i had no issues and if something hapens, i know i can easily order replacement parts.
Go and get a Kapex - it's the only saw that will last you your whole life.
It also holds its value nicely.. if you buy a bosch you'll be lucky to sell it for $200-300 few years down the road but the Kapex will hold its value over time.
No. I know of two failures in the UK - both site 110 volt units, though.PeterK said:I don't really question Festool's engineering but these reports make me wonder if they just did some type of quick easy conversion of the Kapex for the US power.
Still goes back to - are all the failures happening in the US?
I can but agree with you. On a job last year I managed to get the company to supply me with my own 6.5kVA transformer which was specifically to run a Kapex and a Metabo industrial vacuum. There were arguments with every idiot on the site who would insist on plugging their piece of electric string into my transformer. In the end I resorted to making a box and locking the thing inside it to stop that behaviour. The average 3kVA site transformer is just too small for an extractor AND a saw and comments made by others about the cheap thin extension cables (and too many of them) used by everyone are also spot on - I started out with 2.5mm (nor the standard 1.5mm) and I'm on 4mm cables across the board with a few 6mm ones (and more to come as I replace cables). What I can say is that the "power thieves", especially the guys running large grinders or welders, have given me issues in the past when running other non-Festool kit, it's maybe just that Festool stuff is a tad more sensitive (talking Kapex, TS55, OF2200e here)antss said:I have considered that and factor it in to my position regarding this issue. Especially for you guys in the UK that run off of site transformers. Every single one I've seen (which isn't many - but more than most Americans have ) are all undersized for what's being run off of them.