KALOT Group · Installation detail

Bonding Point in Foundation Wall

DWG KA-BP-001 · Rev 0
3D section · Not to scale

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Section cut through bonding point axis

Bill of materials

Item	Description	Material / size	Qty
1	Foundation wall (shown in section)	Reinforced concrete	—
2	Reinforcement bars, outer and inner layer	Deformed steel, e.g. Ø16	—
3	Bonding point, plate flush with wall face	KALOT Group, cast brass, M10 threaded bore	1
4	Exothermic weld, conductor to bonding point stem	Weld metal, graphite mould	1
5	Bonding conductor inside concrete	Bare copper, e.g. 50–70 mm²	1
6	U-bolt clamp, conductor to rebar	Brass, 2 nuts + saddle	1
7	Bolt + washer into bonding point bore	Stainless, M10	1
8	Single-hole cable lug, one at each cable end	Tinned copper, crimped	2
9	Earth cable, bonding point to earth bar	Cu, PVC insulated green/yellow	1
10	4-hole earth bar on two insulators	Copper bar, wall-mounted	1
11	Bolt, nut and washers at earth bar hole 1	Stainless, M10	1

Nail item 3 to the inside of the formwork through its two fixing holes, plate face against the shuttering, before the pour.
Weld item 5 to the stem end with an exothermic weld (item 4) before fixing the rebar cage in its final position.
Run item 5 along the nearest bar and fix it with the U-bolt clamp (item 6). Keep full concrete cover over all internal parts.
Protect the threaded bore from concrete during the pour, then strip the formwork. The plate face stays flush with the wall.
Bolt lug 8 to the bore with item 7, and the second lug to hole 1 of the earth bar with item 11. Holes 2–4 stay free for further bonds.
Measure continuity between the earth bar and the reinforcement with a low-resistance ohmmeter and record the value.

Bonding point in foundation wall, connection to earth bar

Drawing no.KA-BP-001

Revision0

ScaleNot to scale

Date2026-09-30

ManufacturerKALOT Group

SizesConfirm per project