Power Failure

[fruityjin]

HI, all.

I have a TS-55 and MFT table for building a small desk for myself. Recently I'm experiencing the problem with the power.
When I'm cutting 3/4 plywood sheet, it shut down all the power of my house!!! Yes, it looks like the saw is overloaded and house power panel shut the power down automatically. It happens when I tried to cut thick panel(3/4") or long panel(4~5').
So I brought the tools at the building parking garage, plugged with power and tried. I felt like the saw had more power and ran well. However, when I tried thicker panel(1" plywood, 1' x 7'), the saw was loosing its power slowly and shut down whole garage power down.

I use the saw plugged to CT-mini. I tried to connect them separated power source but same power failure.
Actually it didn't happen very first time but after couple of months, the problem happened.
Is there anyone have any clue?

Thanks,
Jin

 

[Ted Miller]

Jin,

The 55 will draw up to 12 amps when going through thicker stock and the mini can draw up to 10 amps. Of course the saw/dc will draw amps as needed depending on work load but add up the total and you can blow 15 or 20 amp breakers easy.

Many breakers in homes carry way to many outlets. Make sure what ever is inline with the outlet you are using the saw you are not totalling over the amp of the breaker...

 

[Dan Lyke]

You said "shut down all the power of my house!!!". Throwing the house breaker, rather than an individual circuit breaker, is rather scary, and if you're getting different results in saw speed at two different locations I think it might be time to bring in the professional electricians to the house.

I've run the TS-55 and the CT22 just fine in my scarily (built in the early 1900s, in California, not known for high quality housing, and "upgraded" over the years by various handy people who may or may not have paid attention to either code or basic principles) wired house, including cutting 3/4" melamine coated MDF, with no problems. In fact, the only time I've thrown a breaker it was using the 1010 router with the dust collector through a cheesey power strip that I shouldn't have had in the chain, and the power strip breaker tripped.

I'd say it's time to have someone with a fast response multimeter (or a logging one...) looking at the circuit you're using to cut with, because if you're really getting voltage drop on a standard 15A circuit while using your circular saw you definitely have problems that you want to address before they create real hazards.

Also, try that circuit with something else that should draw equivalent power, like an 1800 watt toaster.

 

[Dave Ronyak]

I agree that something is suspect with either your saw or your wiring.  I have run my CT-22 with my 1400 FEQ router cutting a full depth profile with a 2 1/2 inch radius "table edge" bit and with my TS 55 cutting full depth to trim a 1 3/8" thick oak passage door without any problems despite my house wiring being 53 years old.  The branch circuits are 12 gauge copper protected by with 20A breakers.  Not once have I tripped a breaker.

Dave R.