10,463 reputation
1449
bio website
location
age
visits member for 3 years, 5 months
seen Nov 17 at 16:55

Oct
3
awarded  Popular Question
Sep
26
awarded  Notable Question
Sep
10
accepted Oil or latex for Grade 5 metal parts, in use case not requiring hard wear
Sep
10
answered How do I mount this box without drilling or damaging the shelf?
Sep
10
comment Any reason not to ground the sheathing of MX wire?
Lastly, think; what would the cable be dissipating that heat into? It's rare, but failures energizing older BX can make the stuff glow red (without popping a fuse, as we've covered). The BX would be clamped to wooden structural members, not far from paper-backed insulation. Expecting older BX to do the job of newer AC/MC cable is asking for a house fire.
Sep
10
comment Any reason not to ground the sheathing of MX wire?
@wallyk: No, no, and no. First, fuses/breakers are "slow-blow" for a reason; you don't want a fast trip for a simple overload. It can take up to a second for a circuit breaker to break at its rating. Second, as I said, energizing grounded armor may not ever cause the breaker to trip, if there's enough resistance between the short and the bus strip that less than 15A is flowing. It's the same reason house plumbing is no longer an acceptable ground; it may well be grounded, but real ground can only absorb so much current.
Sep
10
revised Any reason not to ground the sheathing of MX wire?
added 82 characters in body
Sep
10
revised Any reason not to ground the sheathing of MX wire?
deleted 3 characters in body
Sep
9
comment Any reason not to ground the sheathing of MX wire?
Perhaps the biggest omission of info in the last revision is that I assumed, due to the age of the house, that the BX was non-bonded. The OP infers this is not the "type AC" cable you are familiar with today; it has nothing identifiable as a "ground wire" or "bonding strip". This type of cable dates back to the turn of the last century, and if original to the house, was installed almost 20 years before grounding of receptacles became a code requirement. As such there is no rating nor guarantee that the armor will withstand current and in fact it can be a fire hazard to try.
Sep
9
revised Any reason not to ground the sheathing of MX wire?
added 3367 characters in body
Sep
9
comment Any reason not to ground the sheathing of MX wire?
What I was trying to say was not clearly communicated, and there is also a difference between "true" BX-class cable and what's normally used now (aka MC). I cannot delete this answer and start over, so I am editing.
Sep
4
answered What does this square icon mean on my Honeywell thermostat?
Sep
3
comment What does this square icon mean on my Honeywell thermostat?
The fact that the thermostat is currently set to hold 82* per the OP's photo is the probable reason SmartResponse is off; it's not needed if the temperature control program isn't in use.
Sep
3
revised How can I brace a freestanding downspout?
added 4 characters in body
Sep
3
answered Water Softener using 150 gallons of water a day to regenerate?
Sep
3
answered How can I brace a freestanding downspout?
Sep
3
answered Attaching sill plate to concrete, how do I attach framed wall to sill plate?
Aug
28
revised How can I remove rust stains from clothes?
added 55 characters in body
Aug
12
asked Oil or latex for Grade 5 metal parts, in use case not requiring hard wear
Aug
7
awarded  Nice Answer