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1. Is it okay to have one half of an outlet it's own circuit, such as for an air conditioner? (yes, I broke off the tabs) 2. Can I have multiple wires in a strain relief? 3. How about a staple? 4. Should junction boxes be grounded? 5. Is there any disadvantage to using breakers that are two...

60 amp GFCI breaker, 4 wire Disconnect outside on the house wall. 1) Can I legitamatly put a 120 outlet near this disconnect, powered by one of the two leads coming from the GFCI? 2) Does this outlet need to be, itself a GFCI? 3) Should the disconnect be a breaker? 4) If so, what...

Im sure there is a device for this. Say for example, you wanted to add an oultet in a wall. Is there not a sensor you could drop in the wall, which you would find with a detecting device from the basement so you could drill the hole through the floor? If not, what is the old school method for...

Ran into a basic electric water heater system, built in the last decade, with a boiler sized expansion tank on the hot side. Any idea why? The only guess I have is the heater being on a timer or such, where it goes from stone cold to hot, but even that seems unneccesary. I'd have to...

Installed a potters kiln today, 10.5kw, but only split phased (220v). I have a red and black hot, green ground, but being the device doesn't receive a neutral, should I disregard it or match it to the ground? What is the general rule of neutral coming in contract with ground? Why would...

Does anyone know where to buy straight sections of PEX online, particularly the orange hydronic? My plumbing supply stores don't sell the orange (even in coils) and the coiled Home Depot stuff is wound up like an eight day alarm clock. Even 5 foot lengths would be good. Pushing curved pipe...

The boiler I'm working on has the circulator on the outlet of the boiler, essentially pushing the water through the heaters rather than pulling it. Is this ever legit? I've never seen it this way, but don't know why not.