Less than baseboard electric. Comparable to gas and oil.

Sheetrock (aka gypsum board) up to 5/8"
Sheetrock with plaster up to a total of 5/8"
Solid wood up to 3/8"
Plywood up to 1/4"

The National Electrical Code requires that the outer jacket on Romex can only be removed inside of a junction box. Since the connections of the heating elements are not in the same place, using single conductor wire allows for making these connections without breaking this jacket.

Although Calorique currently has a connection box which allows for using the system with Romex, this box is intended for use only where local code requires the multi-conductor cable since the box is more expensive and difficult to use.

No.

No.

This protects the operation of the elements. If, for example, a bus bar were severed during renovation work*, the entire element would continue to operate.**
* Always turn off power to the elements when doing renovation work to the ceiling or the floor above it.
** If a bus bar is severed, make sure that the severed ends are properly insulated before restoring power to the system.

At 240 volts, 1000 watts uses 4.2 amps