View Single Post
  #3   Report Post  
Posted to alt.home.repair
[email protected] barry@sme-online.com is offline
external usenet poster
 
Posts: 267
Default Wiring multiple baseboard heaters


wrote:
Hi all,

I'm quite confident wiring some baseboards that I need to install...
they're 240V, various sizes.

What I'm not sure of is how to have multiple baseboards on the same
circuit? Can I do it with a 2-conductor wire (as both conductors are
"hot")?

I've been scouring the net looking for a diagram of the circuit from...
say... breaker--baseboard#1--baseboard#2--baseboard#3

I assume also that multiple thermostats could be wired in before each
heater to control that specific heater independantly from others on the
circuit.. (or alternatively have one thermostat at the beginning of the
circuit that would then limit all heaters on the circuit.

Any help greatly appreciated!!


If they have provision for ground connection (like, to enable tripping
breaker
if a short) or the mfg makes any mention of such, or if it's possible
and your
inspector wants it, I'd sure run 3-wire. Inspector trumps all. Hell,
I'd run ground
wire on principle.

All devices (thermostats, breakers, wires, heaters) must be run within
rated limits at all times, meaning for wiring carrying all the load
(before branching)
and breakers allowed limit is 80% of breaker rating.

You want to map out the circuit much more clearly, noting all load
ratings,
carefully. Note mfg's requirements for heaters and see to them. Ensure
that all
wiring segments will be within 80% of rating for worst case and ensure
that all wiring
meets NEC requirements. Stuff like wire gauge, breaker rating,
workmanship.

Sure, you can connect in parallel, series-connected thermostats and
heaters.

Heaters can put some serious sustained stress on wiring and
connections, so
I'd suggest getting some professional advice beforehand, and inspection
before
powering it up. No disrespect intended, but your question triggers
alarms.

Besides, unless you've got your own power-station, resistive electric
heaters
are about the most wasteful way to heat a house.

HTH,
J